Zhang L, Feng H L
Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2016 Jan;51(1):10-4. doi: 10.3760/cma.j.issn.1002-0098.2016.01.004.
Mechanical complications of implant-supported prostheses, which result from stress or mechanical strength and have presented a high incidence, include a number of types such as implant fracture, screw loosening or fracture, abutment fracture, veneer fracture, framework fracture and loss of retention of the prostheses. Possible influencing factors of these complications could be the implant design, diameter and number of the implant, implant position, screw or cement retained superstructure, cantilever, oral parafunction, crown-implant ratio, precision of fabrication and material of the prostheses. Comprehensive consideration of treatment plan, surgery, fabrication and try-in of the prostheses, use and maintenance of the patients is essential in prevention and management of the mechanical complications of implant-supported fixed prostheses.
种植体支持式修复体的机械并发症是由应力或机械强度引起的，且发生率较高，包括种植体折断、螺钉松动或折断、基台折断、贴面折断、支架折断以及修复体固位丧失等多种类型。这些并发症的可能影响因素包括种植体设计、种植体直径和数量、种植体位置、螺钉或粘结固位的上部结构、悬臂、口腔副功能、冠-种植体比例、制作精度以及修复体材料。在预防和处理种植体支持式固定修复体的机械并发症时，综合考虑治疗计划、手术、修复体制作与试戴以及患者的使用和维护至关重要。
